《英藏黑水城文献》中收录有四号西夏时期马料文书,这四号文书多为残片,是研究西夏基层马料分配制度的重要资料。本文对黑水城所出西夏马料文书进行了重新的整理,对文书中存在的错简问题予以纠正;同时,通过文书中的职官、日期等大致推断其为西夏时期的文书,但具体时间难以确定。通过比较宋、夏、元军事制度,基本排除文书中所涉及的马匹为军队用马,而应是政务用马。文书中的马主身份很可能是西夏时期的站户。 The British-Tibet Heishucheng Literature contains the Fourth Horse Material of the Western Xia Dynasty, which is mostly a piece of paperwork. It is an important material for studying the distribution system of grass-roots horses in the Western Xia Dynasty. This paper reorganizes the Western Xiama mailed instruments originated in Heishui city, and rectifies the mistakes in the instruments. At the same time, it can be inferred that it is the instrument of the Western Xia Dynasty by the officials and dates of the instruments, but the specific time Difficult to determine. By comparing the military systems of Song, Xia and Yuan, the horses that are involved in the basic exclusion instruments are horses for the army and should be used by the government. The identity of the owner in the document is likely to be the station of the Western Xia Dynasty.